r+2.5+1.3=7.9

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Solution for r+2.5+1.3=7.9 equation: 


Simplifying
r + 2.5 + 1.3 = 7.9

Reorder the terms:
2.5 + 1.3 + r = 7.9

Combine like terms: 2.5 + 1.3 = 3.8
3.8 + r = 7.9

Solving
3.8 + r = 7.9

Solving for variable 'r'.

Move all terms containing r to the left, all other terms to the right.

Add '-3.8' to each side of the equation.
3.8 + -3.8 + r = 7.9 + -3.8

Combine like terms: 3.8 + -3.8 = 0.0
0.0 + r = 7.9 + -3.8
r = 7.9 + -3.8

Combine like terms: 7.9 + -3.8 = 4.1
r = 4.1

Simplifying
r = 4.1

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